Valve guide



Sept. 8, 1925.

Filed Sept. 16, 1922 C 1 F a .2 M m /%w? 9. Z 1/; w 1 l i .9 .6 v i ll 1L w z w V w y a v v I 5 5 J 0% RAM z vMi. nt! 92 x W hva A, \h INN: I n7 w w 9 w 6 e 1 z 1 M 3 1 R 1 z z W n w m Patented Sept. 8, 1925.

UNITED STATES;

WILLIAMA? L'oF CHICAGO; ILLINOIS;

VAIJVEGUIDE.

Application filed September -16, 1922." Seria1 No.588,622;

T0 all'whom it may concern Be 1tknown that I, \VILLIAM A. DrscH,:a

citizen of the United States, 'residingat' Chicago, in the county ofCook and State of Illinois, have-invented new and useful Im-- provements1n Valve Gu1des,zof whlchv thefollowing is a specification; a

My invention relates to valve guides and more particularly to:such' asare applicable to 'reciprocatory' valves of the stem type,

employed in connection with thecylinders of internal combustion engines.

ing a guide suitably supported." One end of the-valvestem extends-intothe'lntake and exhaust valve chamber andbecomes'covered with carbon,which :is carried into the guide as the=-valve"'rec1procates backhandforth thus subjecting the-bearing surfaces to undue wear, which, takenwith unsuffi= cient lubricatloirthereof necessitates fre quentreplacement of both' valve and guide:

" It is therefore the primary object of my in'-= vention to provide aguide of the character set forth which will serve" as a bearing surfacefor the valve stem, and will maintain the same free of carbon and in athoroughly lubricated condition during its operation.

Another important obj ect of the invention is the provision of a valveof this kind which is adapted to receive and hold a considerablequantity of lubricant for communication to its bearing surface, thelubricant receiving portions of said guide being suppliable bothmanually and during the actuation of the engine.

The invention also has for ,an object to furnish a device of the kindstated which is highly eflicient in use, inexpensive of manufacture, andwhich will be applicable to all internal combustion engines of standardconstruction employing reciprocatory valves.

The above and other objects are attained by means of a novel combinationand arrangement of parts to be hereinafter described and claimed, and inorder that the same may be better understood, reference is had to theaccompanying drawing, forming a part of this specification.

In the drawing:

Figure 1 is a view partly in section and partly in elevationillustrating the application'of'my improved 'valve guide to an internalcombustion engine;

Fig.;:2 is-an elevation of--the guide re-' moved,- and Fig.6 is acentral-longitudinal section through. the guide;

Referring specifically to the drawings-3'.

wherein like reference charactersdesignate' like parts throughout theseveral views, nu- -meral 10 :denotes a portion of the casing of aninternal combustion-engine having an explosion chamber 11, a valve'chambe'r :12, 1 and a crank chamber: 13, the same: being:

usual springs :16 being furnished to returnprovidedwith intake andexhaust valve's of the puppet type shownat 14 and: operated inl theusual :manner" by means of: the cam shaft 1 '15 through the medium ofpush rods 16, the

theva'lve. Sinceth'e' engine,"perse, is'of a well known type' and formsno' part oft-he present 'invention, a further description 7 thereof isunnecessary. y r

The valve guicle' 17 which'for'm's the=sub'-'-"- ject matter-of myinvention comprises 'a sleeve of cast iron'orother suitable bearingmetal having"'a central bore 18 for the reception of the stem 14* ofthe'puppet valve 14. The guide is provided intermediate its ends with ashoulder 19 for determining the location of the guide with respect toits associated support upon the engine and, of course, this varies withdifferent types of engines. Beneath the shoulder 19 the outer surface ofthe guide is formed with a number of undercut circumferential grooves 20of considerable depth from which communication is had with the bore 18through a plurality of obliquely disposed apertures 21 openingdownwardly thereinto. In the engine illustrated, upon reciprocation ofthe piston within the explosion chamber 11, oil from the crank chamber13 is carried upwardly through the aperture 22 in the partition 23disposed between the crank chamber 13 and the portion 12 of the valvechamber, and is splashed into the undercut grooves 20 from which itseeps through the apertures 21 to the bore 18 for lubrication thereof.The reciprocation of the valve stem 14* serves to carry the oil upwardlyto the bearing surface of the guide above the uppermost groove 20 thuseificiently lubricating the same and preventing overheating and unduewear. In engines of different types employing a different system oflubrication oil may be fed to the grooves 20 from an oil can, thegrooves being of sufficient ca pacity to receive a considerable supplyof lubricant.

The upper end of the valve guide l7 is provided with a chisel like edge24 to re move any particles of carbon or other foreign matter clingingto the valve stem. An

' annular groove 19 in the outer surface of the valve guide adjacent andabove the shoulder 19 may be provided for reception of a washer orgasket (not shown) to assure a tight fit between the guide and theengine. By my construction the effect of the lubricant supplied from thegrooves 20 is not destroyed by the effect of carbon within the upper endof the guide 17. However, after long continued use the edge 24 becomessomewhat 'dullened and particles of carbon enter the bore of the guide.To provide for the removal of these particles the apertures 25 arefurnished through which the carbon deposits are forced by the actuationof the valve, thus leaving the valve stem and the bore of the valveguide free of grit, and depositing the carbon particles in the valvechamber 12.

From the foregoing description read in connection with theaccoinpanyingdrawing, the novel features and advantages of my valve guide will bereadily appreciated by those skilled in the art, and while 'I havedescribed the preferred embodiment of the invention, it will beunderstood that various changes and modifications thereof may be madewithin the spirit and scope of the invention as claimed hereinafter.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is: r

1. A valve guide for internal combustion engines comprising a tubularvalve stem receiving body having the outer side thereof formed with aplurality of spaced circumferential lubricant receiving grooves, theupper and lower walls of which are inclined downwardly and inwardly,said tubular body being formed with openings inclined downwardly andinwardly from said grooves and opening into the bore of said bodywhereby the lubricant in said grooves may be supplied to the stemmovable through said body, said body being provided above said grooveswith a valve spring shoulder.

2. A valve guide for internal combustion engines comprising a tubularvalve stem receiving body having the outer side thereof formed with anannular lubricant receiving groove, said tubular body being formed withopenings inclined downwardly from .said groove and opening into the boreof said body'to supply the stem movable through said body with lubricantfrom said groove, the upper portion of said tubular body be ing bevelledto a sharp annular edge to engage and scrape the carbon from said stem,said tubular body being formed below said edge with a plurality ofdownwardlyand outwardly inclined openings for the discharge of thecarbon on said valve stem.

In testimony whereof I affix my signature;

WILLIAM A. DISOH.

